Normally this is caused by too much manganese and iron in the well. This can be a health hazard as bacteria will feed on the iron and manganese. Purchasing a ion exchange water softener may correct the problem, but having your water tested first to determine your plan of action may save money in the long run.

Contamination can be caused by nearby disruption of the water table by CONSTRUCTION, OTHER WELLS or natural occurances. Provide alternate drinking water until you determine that the turbidity in her water is not toxic. Local municipal water facilities can test it for a fee. Take samples in glass jars twice daily for comparison. Good luck.

It is related to the place of well. Coal is affected to well water black. Other reason is polluted water is near the well or neighborings. This type water contains mercury or lead substances. That affected brain.